Compilation of extracts and texts from various Irish annals and registers in Latin, incl. the Register of Clogher, John Clyn's Annals of Ireland, Henry of Marlborough's annals, short annals of Ireland by Thady Dowling, Gerald of Wales, the annals of Dunbrody Abbey, the Black and White Books of Christ Church, Dublin, the annals of Ross and the Annals of Ulster. For much of the material, there is evidence that it was written for James Ussher (d. 1656). The manuscript passed into the possession of James Ware.